1 Answer

OK, I installed the fonts and found the problem.
LibreOffice is not connecting the Regular font to the Italics, Bold, and Bold Italics fonts.
So LibreOffice is displaying the faked italics and faked bold instead of the real fonts.

The font is the problem.
This is caused by the font metadata defining the regular font subfamily as Roma not Regular.
I edited the regular font metadata to change the Font Subfamily to Regular.
When I installed this font instead, LibreOffice then displayed the proper Italics, etc.